55818504 has 256 divisors, whose sum is σ = 195840000. Its totient is φ = 14370048.

The previous prime is 55818473. The next prime is 55818541. The reversal of 55818504 is 40581855.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 833079 + ... + 833145.

It is an arithmetic number, because the mean of its divisors is an integer number (765000).

Almost surely, 2^55818504 is an apocalyptic number.

55818504 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55818504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97920000).

55818504 is an abundant number, since it is smaller than the sum of its proper divisors (140021496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55818504 is a wasteful number, since it uses less digits than its factorization.

55818504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 55818504 is about 7471.1782203345. The cubic root of 55818504 is about 382.1724685604.

The spelling of 55818504 in words is "fifty-five million, eight hundred eighteen thousand, five hundred four".